[Letter from I. H. Kempner to Roma Lipowska, August 1, 1952], letter, August 1, 1952; (https://texashistory.unt.edu/ark:/67531/metapth1461031/m1/1/: accessed July 16, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .